XPS Analysis of Ni and Oxygen in Single-Sintered SrTiO3 Multifunction Ceramic
摘要
XPS analyses have been performed to investigate the chemical conditions of Ni and oxygen on grain surfaces in single-sintered SrTiO3 capacitor-varistor ceramic doped with Nb2O5 and NiO. It is ascertained that Ni is in form of Ni2+ ions, which substitute for Ti4+ ions on grain surfaces during the oxidizing annealing. Moreover, it is confirmed that three kinds of chemically adsorbed oxygen such as O2-, O- and O~ are formed on grain surfaces. It is proposed that these behaviors contribute greatly to the generation of multiple types of grain boundary acceptor states in the ceramic.
引用本文（GB/T 7714）
Qing Qing, Xu. XPS Analysis of Ni and Oxygen in Single-Sintered SrTiO3 Multifunction Ceramic[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2001.
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